public class E {
  public static void main(String args[]) {
    Fish redFish = new Fish();
    System.out.println(redFish.weight);
    Lake lake = new Lake ();
    lake.setFish(redFish);
    lake.foodFish(120);
    System.out.println(redFish.weight);
    System.out.println(lake.fish.weight);
  }
}
